Name: Antifungal Additive for Sanitary Silicone Sealants AFS-10
Brand: Coatingsink
SKU: antifungal-additive-sanitary-silicone
Availability: InStock

Question 1

What dosage of AFS-10 is required to achieve antifungal efficacy in a finished silicone sealant?

Accepted Answer

A loading of 2–5% AFS-10 delivers 0.2–0.5% combined IPBC and zinc pyrithione in the cured film. At 2% incorporation, performance meets the EN 15457/EN 15458 classification criteria for resistance to fungal and algal growth under continuous wet-room exposure. Higher loadings (up to 5%) are recommended for tropical climates or constant-immersion service conditions.

Question 2

Is AFS-10 compatible with both acetoxy-cure and neutral-cure silicone systems?

Accepted Answer

Yes. AFS-10 uses a silicone-compatible plasticizer carrier that is inert toward both acetic acid-releasing (acetoxy) and oxime- or alkoxy-cure catalysts. Incorporate during base compounding before crosslinker addition at low shear. Accelerated aging data show no loss of antifungal activity after 12 months storage at 30°C in sealed containers.

Question 3

Are the biocides in AFS-10 approved under EU Biocidal Products Regulation for sealant applications?

Accepted Answer

Yes. Both IPBC (3-iodo-2-propynyl butylcarbamate, CAS 55406-53-6) and zinc pyrithione (CAS 13463-41-7) are approved active substances for Product Type 10 (preservation of construction materials) under EU BPR 528/2012. Usage levels are within the limits set by Regulation (EU) 2018/675, and the formulation carries full REACH registration.

Carrier	Silicone-compatible plasticizer
Appearance	Off-white to cream paste
Active Content	10% (IPBC + zinc pyrithione, 1:1 ratio)
Density (25°C)	1.05–1.10 g/ml
Recommended Dosage	2–5% in finished sealant

Antifungal Additive for Sanitary Silicone Sealants AFS-10

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